// 简单路由
var http = require('http');

var server = http.createServer(function(req,res) {
	var userUrl = req.url;

	res.writeHead(200,{"Content-Type":"text/html;charset=UTF8"});

	// substr函数来判断此时的开头
	if (userUrl.substr(0,9) == "/student/") {
		var studentid = userUrl.substr(9);
		if (/\d{10}/.test(studentid)) {
			res.end("您要查询学生信息，id为" + studentid);
		} else {
			res.end("学生学号位数不对");
		}
	} else if (userUrl.substr(0,9) == "/teacher/") {
		var teacherid = userUrl.substr(9);
		if (/\d{6}/.test(teacherid)) {
			res.end("您要查询老师信息，id为" + teacherid);
		} else {
			res.end("老师学号位数不对");
		}
	} else {
		res.end("请检查url");
	}
});

server.listen(3000,'127.0.0.1')